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Hi all, I've been collecting parts for a single turbo conversion I was going to do to my 98 bg5 GTB ej206 manual. (yeah weird, and wrong CR as it runs manual ecu, yet has reliably run for the two years I've owned it) but then I scored an 02 rev d bh5 yesterday with a blown primary. So now it seems sensible to put all single turbo stuff into the rev d as my bg5 has nothing wrong with it (yet). I understand it's a bit of a different process, but I think I have most of what I'll need. I have a td06 20g, full length tuned headers (slip joint type), 3" down pipe, fmic setup, greddy emange ultimate piggy back ecu (just gonna buy a harness, CBF with repin or splice), tial 44mm external wastegate, blitz bov. I also have half a WRX in parts and a spare motor to scavenge parts from. So what I want to know at this point is if anyone has used the factory ecu in the rev d to go single? I believe they are tunable? And other than the wiring and different intake, is there a hell of a lot of difference in the actual physical process of swapping everything over? I read the single turbo thread, am I able to largely follow that? Or is it a completely different game?
I have been having a mess around with our Legacy GTB trying to get a few pops and crackles on decel. I'll start with the car.
We have a 2003 Legacy GTB with an EJ20Y, so it has the bigger TD04 Turbo, car has a gutted cat in the downpipe but the secondary cat is till in tact but i think its on its way out, the whole bottom of the cat is covered in white stuff and you can get a bit of an eggy smell sometimes, so that could be an issue. I have been playing around with the "Base Timing B" maps as this is the map most people adjust to get pops and crackles. I have adjusted between 2000rpm and 5000rpm to -12 degrees but the car still won't pop and crackle, is this because of the secondary cat or another reason? I would have thought even with the secondary cat you would still be able to hear it try to pop. The WRX's and STI's seem to have an Overrun table which our legacy doesn't have, also tables called "base timing b (in gear)" A few questions come to mind.
1. When does the car actually use "Base timing b" and "Base timing a",
2. Do i need to add fuel at the points where the timing is retarded.
3. Does the Legacy cut fuel on decel?
4. Why wont you pop
If anyone has any info at all that would be great,
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